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中文摘要：
针对天顶仪地面天文定位算法需要反复差值,计算繁琐的问题,文章将航天器姿态算法应用到天顶仪定位中来,详细研究了3种姿态算法,并为利用姿态算法实现定位给出了从姿态信息计算天顶仪光轴指向的新方法：建立了姿态算法的定位误差模型,结合过蒙特卡洛仿真,研究了姿态算法的定位精度并与原算法进行了比较;最后通过实际观测实验,实际分析了姿态算法和原算法在实验系统中的实际定位精度.结果表明：各姿态算法均能应用于天顶仪定位中,且精度高于原定位算法.
英文摘要：
In order to solve the problem that the present positioning algorithm is complicated in calcu- lation, the paper introduced and applied the attitude determination algorithms. Three kinds of algorithms were studied in detail. And a method used to calculate the direction of optic axis was proposed. A model that describes the positioning accuracy was established. Through simulation the positioning accuracy of the algorithms were analyzed and compared with the original method. Result showed that all those algorithms discussed could be used to determine the celestial position and the accuracy would be much higher than the original algorithm.
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